Crash helmet



FIG. 1 is a front view of a helmet in closed visor position according tothe design;

FIG. 2 is an exploded perspective view of helmet of Figure in closedvisor position;

FIG. 3 is a rear view of the helmet of FIG. 1;

FIG. 4 is a left side view of the helmet of FIG. 1 in closed visorposition; and,

FIG. 5 is a top plan view of the helmet of FIG. 1 in closed visorposition.

The ornamental design for a crash helmet, as shown and described.